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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

Which of the following holds good for a solution obeying Raoult’s law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing) ?

A ΔH = 1 (+ ve) and Δ V = -ve

B ΔH = 0

C ΔV = 0

D Both B. and C.

Review Detailed Answer

Correct Answer: Both B. and C.

The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of_________________?

A Formation

B Solution

C Combustion

D Fusion

Review Detailed Answer

Correct Answer: Formation

Raoult’s law is obeyed by a _____________ solution?

A Saturated

B Molar

C Normal

D None of these

Review Detailed Answer

Correct Answer: None of these

On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes_________________?

A 1

B 8

C 4

D 2

Review Detailed Answer

Correct Answer: 4

Cp equals Cv at________________?

A 0°C

B 0°K

C 0°F

D 0°R

Review Detailed Answer

Correct Answer: 0°K

Which of the following ratios defines the recycle ratio in a chemical process ?

A Gross feed stream/recycle feed stream

B Recycle stream/fresh feed stream

C Recycle stream/gross feed stream

D None of these

Review Detailed Answer

Correct Answer: Recycle stream/fresh feed stream

N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (Molecular weight of urea = 60) ?

A 80%

B 90%

C 95%

D 98%

Review Detailed Answer

Correct Answer: 90%

The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are__________________?

A 3.01 × 1022

B 6.02 × 1023

C 9.03 × 1024

D 1.20 × 1024

Review Detailed Answer

Correct Answer: 9.03 × 1024

Diffusion is that property by virtue of which a perfume bottle when opened up in a room, makes the whole room fragrant with its smell. If a perfume ‘X’ diffuses twice as fast as another perfume ‘Y’; what is the molecular weight of ‘Y’, if the vapor density of gas ‘X’ is 2? Molecular weight of gas ‘X’ is to be assumed to be 2 ?

A 2

B 4

C 8

D 16

Review Detailed Answer

Correct Answer: 16

A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the ____________________?

A Atomic weight of the metal is 4

B Equivalent weight of the metal is 4

C Atomic weight of the metal is 2

D Equivalent weight of the metal is 8

Review Detailed Answer

Correct Answer: Equivalent weight of the metal is 4

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Which of the following holds good for a solution obeying Raoult’s law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing) ?

The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of_________________?

Raoult’s law is obeyed by a _____________ solution?

On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes_________________?

Cp equals Cv at________________?

Which of the following ratios defines the recycle ratio in a chemical process ?

N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (Molecular weight of urea = 60) ?

The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are__________________?

A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the ____________________?